<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>jQueryQrCode</title>
    <script type="text/javascript" src="https://cdn.bootcdn.net/ajax/libs/jquery/3.7.1/jquery.js"></script>
    <script type="text/javascript" src="/qrcode/jqueryqrcode/jquery.qrcode.min.js"></script>
</head>
<body>

<div id="qrcode"></div>
<script>
    // $('#qrcode').qrcode("hello world");
    $('#qrcode').qrcode({width: 64,height: 64,text: "hello world"});
</script>
</body>
</html>